How Melbourne's Public Art and Heritage Databases Got Flooded With Duplicate Images — And Why It Took Years to Notice

Victoria's public image repositories — the digital archives that underpin everything from heritage listing decisions to Arts Centre Melbourne's own collection catalogues — are carrying thousands of duplicate photographs, many filed under different accession numbers and attributed to different photographers, sometimes for the same wall, the same laneway, the same demolished building. The problem did not emerge overnight. It accumulated, record by record, across at least three separate digitisation drives stretching back to the early 2000s.

The issue matters now because the Victorian government's current push to densify inner-city suburbs — Fitzroy, Collingwood, Brunswick and parts of Footscray among them — depends heavily on accurate heritage documentation. Planning permits, objections, and Victorian Civil and Administrative Tribunal hearings all draw on image records held in databases managed by Heritage Victoria and the Public Record Office Victoria. When duplicate entries exist, they can carry conflicting metadata: different dates, different condition assessments, different copyright attributions. That is not an abstract problem when a VCAT member is weighing whether a 1880s terrace on Smith Street merits protection.

Three Digitisation Rounds, Three Sets of Problems

The root cause is structural. Victoria ran its first major photographic digitisation program between 2001 and 2004, converting tens of thousands of glass plate negatives and film prints into TIFF files. A second round followed between 2011 and 2014 under the state's then-digital transition framework, and a third, more fragmented effort ran through individual council partnerships from roughly 2018 onward — including a notable program with the City of Melbourne involving images held at the Melbourne Museum on Nicholson Street in Carlton.

Each digitisation round used different file-naming conventions, different metadata standards, and in several cases different contracted vendors. The City of Melbourne's own Library Service at 253 Flinders Lane holds a parallel image collection that was catalogued separately again, using Dublin Core metadata rather than the SPECTRUM standard applied by state-level agencies. When collections were later merged or cross-referenced, automated deduplication tools failed to catch visually identical images carrying different filenames. A photograph of the Royal Arcade taken in 1967, for example, might exist in three separate database entries — one scanned by a council contractor, one transferred from a defunct community history project, one donated directly by a private family — with no system flag linking them.

The State Library of Victoria's digital collections, accessible via its catalogue at slv.vic.gov.au, publicly acknowledged in its 2023–24 annual report that collection integrity reviews were ongoing, though the report did not specify duplicate image volumes. Sector insiders have pointed to figures ranging from 8,000 to upward of 15,000 suspected duplicates across the combined state heritage image pool, though no agency has published a verified count.

What a Fix Actually Looks Like

The Victorian government's Digital Assets Strategy, released in late 2024, flagged duplicate record remediation as a priority for cultural institutions receiving operational funding through Creative Victoria. The practical mechanism involves a phased audit — institutions submit a sample set of records for automated hash-matching and human review, then receive a remediation plan. The Australian Institute for the Conservation of Cultural Material, which has a Victorian branch active in Melbourne, has been consulted on protocols for cases where duplicate images carry legitimately different conservation-relevant metadata.

For heritage practitioners working on planning cases right now, the advice from experienced consultants is to cross-check any image sourced from a public database against at least one secondary source before relying on it in a submission. The City of Yarra, whose planning department handles a high volume of heritage permit applications covering Fitzroy and Collingwood, updated its own image citation guidelines for heritage reports in March 2026 partly in response to errors traced back to duplicate database entries.

The broader audit is expected to conclude in stages through 2027. Until it does, Victoria's visual record of its own built environment remains officially incomplete — a gap that matters most precisely when the state is debating, street by street, what is worth keeping.